What are the main disadvantages of using Elasticsearch?
The question is about Elasticsearch .
The main disadvantages of Elasticsearch include: high JVM memory requirements and complex garbage collection tuning for production stability; operational overhead of cluster management and index lifecycle configuration; near-real-time rather than instant indexing with a 1-second default delay; data duplication costs from synchronising the application database with the Elasticsearch index; and significantly higher infrastructure cost compared to PostgreSQL full-text search at equivalent data volumes.
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